memset from ROM isn't always used anymore since GCC 13.2 update (IDFGH-12173)

[darthcloud]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

v5.3-dev-2058-gf68c131e56

Operating System used.

Linux

How did you build your project?

Command line with idf.py

If you are using Windows, please specify command line type.

None

What is the expected behavior?

I'm expecting the ROM version of memset (and all other defined in esp_rom/esp32/ld/esp32.rom.newlib-funcs.ld) to be always used.

What is the actual behavior?

Since the update to GCC 13.2 (2585e53) sometimes memset is inlined and performance is affected in some case.

See 5.2 disassembly vs 5.3 one:
5.2_memset.txt
5.3_memset.txt

Steps to reproduce.

See example of use of memset that produce the above disassembly.
https://github.com/darthcloud/BlueRetro/blob/b78459b36b6665bfb71b3fb2f3c02324e34c154a/main/bluetooth/host.c#L571-L574

sdkconfig.txt

Build or installation Logs.

No response

More Information.

Adding to my CmakeList.txt this line fixed the issue:

target_compile_options(${COMPONENT_LIB} PRIVATE -fno-builtin-memset)

[darthcloud]

Tested in latest master and it's fixed! Thanks!